The interface risk in roofing, cladding and glazing packages
Leaks, cold bridges and late variations often live between packages, not inside them. The envelope needs one coordinated view.
By Ben Laybourne · 28 June 2026
Most facade problems do not start because one product is bad. They start where products meet: curtain wall to cladding, roof to parapet, glazing to SFS, rainscreen to fire barrier, bracket to structure, membrane to opening.
When roofing, cladding, glazing and framing are bought separately, those junctions can fall between scopes. That creates delays, variations and sometimes defects that could have been avoided with earlier coordination.
Coordination is a delivery discipline
A coordinated envelope package looks at sequencing, tolerances, bracketry, drainage, movement, access, fixings, membranes, fire barrier installation and handover records together. It reduces the space for assumptions.
“The interface is where a facade package either becomes buildable or becomes a problem.”
That is why ALM Facades can take the complete envelope or support individual trades with a clear view of the surrounding packages.